There are a few different ways that you can combine worksheets from many workbooks into one master workbook in Excel. One way is to manually copy and paste the data from each worksheet into a new worksheet in the master workbook. This can be time-consuming, especially if there are a lot of worksheets to combine. Another way is to use a macro to automate the process. The macro will loop through all of the workbooks in a specified folder and copy the data from each worksheet into a new worksheet in the master workbook. This is a much faster way to combine worksheets from many workbooks.

To use a macro to combine worksheets from many workbooks, follow these steps:

1. Open the workbook that will serve as the master workbook. This workbook should have one blank worksheet where all of the data from the other workbooks will be copied.
2. Press Alt+F8 to open the Macro dialog box. Select CombineWorksheetsFromManyWorkbooks and click Run.
3. In the Combine Worksheets From Many Workbooks dialog box, click Browse to select the folder that contains the workbooks that you want to combine. All of the files in this folder will be processed by the macro.
4. Click OK to close the dialog box and start the macro.

The macro will loop through all of the files in the specified folder and copy the data from each worksheet into a new worksheet in the master workbook. The name of each source worksheet will be used as the name of the corresponding destination worksheet. When the macro has finished running, all of your data will be in one place for easy analysis.